18-r/3=20

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Solution for 18-r/3=20 equation: 



18-r/3=20

We move all terms to the left:

18-r/3-(20)=0

We add all the numbers together, and all the variables

-r/3-2=0

We multiply all the terms by the denominator


-r-2*3=0

We add all the numbers together, and all the variables

-1r-6=0

We move all terms containing r to the left, all other terms to the right

-r=6

r=6/-1

r=-6

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